- Esperanto The universal language : the student's complete text book, containing full grammar, exercises, conversations, commercial letters, and two vocabularies
- Let's take another look at language;: Language and world peace (An Exposition-Banner book) by Evelyn Oline, 1958
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- International Language Past, Present & Future With Specimens Of Esperanto And Grammar by W. J. Clark, 2009-11-07
- General language course, by Helen Slocomb Eaton, 1934
- The English-Esperanto dictionary by Herbert Harris, 1915
- MLS Easy Immersion Esperanto Pro by Magnum Language Systems, 2006-01
- Esperanto, The Universal Language: Containing Full Grammar, Exercises, Conversations, Commercial Letters, and Two Vocabularies (Classic Reprint) by J. C. O'Connor, 2010-03-22
- A Complete Grammar of Esperanto: The International Language by Ivy Kellerman Reed, 2009-04-10
- Talk Now! Learn Esperanto by Eurotalk Ltd, 2009-10-12
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